A gateway [] (English gateway, German also minutes converter) it permits networks, which are based on completely different minutes, to communicate with one another.

Function

For this purpose a gateway makes a minutes conversion. Thereby everything is permitted to the gateway, what for the conversion of the data it is necessary also omitting information, if these cannot be transported in the goal net. In the detail becomes all minutes information, which is attached to a packet (e.g. IPX/SPX), removed and replaced by other one (e.g. TCP/IP for Internet). Besides there is also gateways for numerous other intended purposes, about E-Mail to SMS (Short Message service), fax to E-Mail, E-Mail to language etc.

Demarcation to rout

Gateways will be often implemented generally linguistic usage equated with routing, although rout only on the third layer (switching layer) of the OSI reference model work, a gateway against it on all layers (1-7) can. In some operating systems the IP address of the Routers, which is registered e.g. in Routingtabellen, is called however also gateway.

Gateways do not work also with so-called Tunneling minutes, at those minutes into another are packed up, to the goal net transported and again unpacked there (NetBIOS over TCP/IP is such a Tunneling minutes). They do not convert minutes material into another, it exist a necessity that in the goal net output minutes are used as with the tunnel.

Other gateways

Gateway as network Dienstleister is not to confound with the "“service gateway"” - concept, as it is represented e.g. by OSGi - even if quite laps exist.

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